Which Is True About Superantigens

question 74

Multiple Choice

Which is true about superantigens?

• A) They are a type of exotoxin AND they stimulate an abnormally high number of TC cells.
• B) They bind to MHC class II molecules on T cells AND they are a type of endotoxin.
• C) They bind to MHC class II molecules on T cells AND they enhance specific antibody production.
• D) They are processed intracellularly AND they are a type of endotoxin.
• E) They are a type of exotoxin AND they bind to MHC class II molecules on T cells.

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Definitions:

Nucleus

(1) The central region of an atom that contains the protons and neutrons. (2) A cell organelle in eukaryotes that contains the DNA and serves as the control center of the cell. (3) A mass of nerve cell bodies in the central nervous system. Compare with ganglion.

Membrane-Enclosed Organelles

Structures within eukaryotic cells that are surrounded by a lipid bilayer membrane, each performing distinct functions vital to the cell’s operation.

Neurotransmitters

Chemical signals used by neurons to transmit impulses across a synapse.

Digestive Enzymes

Proteins secreted by the digestive system that break down food into nutrients that the body can absorb.